| Andrew Christopher Bolter | Director | 3 Sept 2012 | 4 Apr 2014 | British | 56 years |
| Charles Stephen Nicholson | Director | 3 Jan 1997 | 28 Feb 2010 | British | 74 years |
| Clive Cadwgan James | Director | 16 May 2005 | 30 Apr 2009 | British | 78 years |
| David Blount | Director | 31 Dec 1996 | 31 Dec 2003 | British | 79 years |
| David Stuart Billson | Director | 12 Oct 1998 | 25 Apr 2012 | British | 60 years |
| Deborah Grimason | Director | 28 Jun 2013 | 20 Nov 2013 | British | 63 years |
| Fiona Puleston Penhallurick | Director | 4 Apr 2014 | 15 Mar 2016 | British | 59 years |
| James Richard Stirk | Director | 25 Apr 2012 | 14 Dec 2012 | British | 67 years |
| James Richard Stirk | Secretary | 31 Dec 1996 | 30 Nov 2012 | British | - |
| Jeremy David Hilliard | Director | 2 Apr 2009 | 12 Jul 2010 | English | 66 years |
| John Charles Spiers | Director | 1 Jan 2001 | 19 Dec 2005 | British | 79 years |
| John Richard Bradshaw | Secretary | 30 Nov 2012 | 29 Jun 2013 | British | - |
| Lafarge Tarmac Directors (uk) Limited | Corporate Director | 28 Jun 2013 | 27 Aug 2015 | United Kingdom | - |
| Michael John Saunders | Director | 1 Jan 2004 | 31 Dec 2005 | British | 70 years |
| Paul Anthony Hobson | Director | 1 Jul 1997 | 31 Jan 2005 | British | 67 years |
| Philip Robert Strong | Director | 1 Jan 1997 | 13 Jul 1998 | British | 77 years |
| Pinsent Masons Director Limited | Corporate Nominee Director | 30 Jul 1996 | 31 Dec 1996 | United Kingdom | - |
| Pinsent Masons Secretarial Limited | Corporate Nominee Secretary | 30 Jul 1996 | 31 Dec 1996 | United Kingdom | - |
| Richard Simpson | Director | 5 Sept 2007 | 21 Nov 2011 | British | 54 years |
| Stephen Nicholas Carr | Director | 1 Jul 1997 | 1 Jan 2001 | British | 81 years |
| Tarmac Nominees Limited | Corporate Director | 21 Nov 2011 | 29 Jun 2013 | United Kingdom | - |
| Tarmac Nominees Two Limited | Corporate Director | 25 Apr 2012 | 29 Jun 2013 | United Kingdom | - |
| Timothy Charles Jackson | Director | 31 Dec 1996 | 1 Jul 1997 | British | 74 years |
| William Spurr | Director | 4 Jan 2005 | 5 Sept 2007 | British | 62 years |
